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Singh, Vishal
- Physiological and Biochemical Changes during Seed Deterioration in Perilla Frutescens (l.) Brittion
Abstract Views :282 |
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Authors
Vishal Singh
1,
Veena Gupta
2
Affiliations
1 National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, IN
2 National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, IN
1 National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, IN
2 National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, IN
Source
International Journal of Plant Sciences, Vol 7, No 1 (2012), Pagination: 1-5Abstract
Accelerated ageing test was conducted in laboratory on seeds of 20 different accessions of Perilla frutescens (L.) Brittion to understand the effect of deterioration on seed health and viability. Seeds were aged for 48 and 72 hours though accelerated ageing treatment (100% RH and 440 C temperature) and were analyzed for various physiological and biochemical parameters. The germination percentage, vigour index, speed of germination and seedling length decreased as the accelerated ageing period increase in all seed lots. Average increase in the electrical conductivity values of seed leachates over control was 106.55 per cent after 48 hrs and 170.27 per cent after72 hrs of ageing treatment. Total soluble protein declined by 30.83 per cent after 48 hrs and 50.34 per cent after 72 hrs of accelerated ageing. Thousand seed weight was positively correlated with speed of germination and germination percentage and was negatively correlated with lipid peroxidation and decrease in soluble proteins. Lipid peroxidation values increased significantly in aged seed lots over the control.Keywords
Seed Ageing, Germination, Seed Vigour, Protein Profile, Lipid per Oxidation
- Forests of the Western Himalaya
Abstract Views :267 |
PDF Views:74
Authors
Affiliations
1 Centre for Ecology Development and Research, 41/I, Vasant Vihar, Dehradun 248 006, IN
1 Centre for Ecology Development and Research, 41/I, Vasant Vihar, Dehradun 248 006, IN
Source
Current Science, Vol 107, No 8 (2014), Pagination: 1225-1226Abstract
No Abstract.Full Text
- Machine Tool Multibody Dynamic Model Updating Using Vision-Based Modal Analysis
Abstract Views :124 |
PDF Views:0
Authors
Vishal Singh
1,
Mohit Law
1
Affiliations
1 Indian Institute of Technology Kanpur, Kanpur, IN
1 Indian Institute of Technology Kanpur, Kanpur, IN
Source
Manufacturing Technology Today, Vol 22, No 2 (2023), Pagination: 23 - 28Abstract
Machine tool dynamic behaviour is influenced by the structural properties of its subsystems assembled at interfaces as well as by the interface characteristics. Interfaces are commonly modelled as spring-damper connections, parameters of which are usually updated by minimizing the difference between model-predicted and measured dynamics characterized by frequency response functions. This model updating approach requires global mode shapes to be measured by roving the hammer and/or the sensor such as to localize the joint parameters to be updated. Such measurements are time consuming and fraught with errors. As a new, alternative, and simpler way to update joint parameters of a machine tool multibody dynamic model, this paper reports on the use of full-field vision-based modal analysis methods. Mode shapes thus identified agree with those estimated with the traditional experimental modal analysis procedures. The updated machine tool multibody dynamic model is a step towards realizing an accurate digital twin.
Keywords
Machine Tools, Model Updating, Vision-Based Modal Analysis, Dynamics, Joints, Frequency Response Function, Digital TwinReferences
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